CN111443828A - Touch display module, control method thereof and display device - Google Patents
Touch display module, control method thereof and display device Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 44
- 230000001678 irradiating effect Effects 0.000 claims description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 239000002952 polymeric resin Substances 0.000 claims description 3
- 239000003086 colorant Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000005525 hole transport Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000001427 coherent effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/26—Reflecting filters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- General Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention provides a touch display module, a display device and a method for controlling the touch display module to display a preset color in a screen-off state. The touch display module comprises a display module, a touch module and a circular polarizer touch module which are sequentially stacked, wherein the touch module comprises a substrate, a preset included angle is formed between the direction of a first phase difference generated by the irradiation of ambient light to the substrate and the direction of a second phase difference generated by the irradiation of the ambient light to the circular polarizer, the sum of the first phase difference and the second phase difference is the preset phase difference due to the preset included angle, and when the touch display module is in a screen extinguishing state, the preset phase difference enables light only with preset color to be reflected out of the touch display module. The touch display module can display preset colors in a screen extinguishing state, is attractive in appearance, meets aesthetic requirements of users, and is wide in application range and good in commercial prospect.
Description
Technical Field
The invention relates to the technical field of display, in particular to a touch display module, a method for controlling the touch display module to display a preset color in a screen-off state and a display device.
Background
In the related art, the display device displays black of the screen itself in the screen-off state, and has a single color tone and a poor visual effect, which cannot meet the user requirements.
Thus, the related art of the existing display device still needs to be improved.
Disclosure of Invention
The present invention has been completed based on the following findings of the inventors:
after a great deal of deep investigation and experimental verification on the influence of the structure in the touch display module on light, the inventor finds that when the ambient light irradiates into the touch display module, the ambient light is in contact with the touch display module, so that the light is divided into two coherent lights, and the difference between the phases of the two coherent lights is the phase difference generated when the ambient light irradiates into the touch display module. The phase difference generated after the ambient light irradiates the whole touch display module is controlled, so that the light with the preset color can be reflected from the touch display module in the screen off state of the touch display module, and the touch display module can display the preset color in the screen off state. Meanwhile, the flux of the reflected light is very small relative to the flux of the light emitted by the touch display module, so that the touch display module can display different colors in a screen off state and can not influence normal display in a screen on state. Specifically, first, in the touch display module, except for the circular polarizer and the substrate of the touch module, after the ambient light irradiates other structures in the touch display module, the influence on the magnitude of the phase difference between two coherent lights split from the ambient light is not great, so that, to adjust the magnitude of the phase difference generated by the ambient light passing through the entire touch display module, only the sum of the phase differences generated by the ambient light passing through the circular polarizer, the substrate of the touch module, or the ambient light passing through the circular polarizer and the substrate of the touch module is required to be adjusted. However, since the substrates of the circular polarizer and the touch module are generally commercialized products directly purchased from manufacturers, it is difficult to separately adjust the magnitude of the phase difference generated by the ambient light through the circular polarizer and the magnitude of the phase difference generated by the ambient light through the substrate of the touch module, and therefore, the inventors have adjusted the magnitude of the phase difference generated by the ambient light through the circular polarizer and the substrate of the touch module by adjusting the sum of the phase differences generated by the ambient light through the circular polarizer and the substrate of the touch module. In addition, the inventors found that the adjustment of the summation of the phase differences can be specifically achieved by adjusting the direction of a first phase difference generated by ambient light passing through a substrate of a touch module and the direction of a second phase difference generated by ambient light passing through a circular polarizer (the summation of two phase differences parallel to each other is a numerical value addition, and the summation of two phase differences perpendicular to each other is a numerical value subtraction).
Based on this, an object of the present invention is to provide a touch display module that can display a predetermined color in a screen-off state, has an attractive appearance, meets aesthetic requirements of users, and has a wide application range or good commercial prospects.
In one aspect of the present invention, a touch display module is provided. According to an embodiment of the present invention, the touch display module includes a display module, a touch module and a circular polarizer, which are sequentially stacked, the touch module includes a substrate, a predetermined included angle is formed between a direction of a first phase difference generated by irradiation of ambient light to the substrate and a direction of a second phase difference generated by irradiation of the ambient light to the circular polarizer, the predetermined included angle enables a sum of the first phase difference and the second phase difference to be a predetermined phase difference, and in a screen-off state of the touch display module, after the ambient light is incident to the touch display module, the predetermined phase difference enables only light with a predetermined color to be reflected from the touch display module. Because only the light with the preset color can be reflected out of the touch display module in the screen extinguishing state, the touch display module can display the preset color in the screen extinguishing state, has attractive appearance, meets the aesthetic requirement of users, and has wide application range and good commercial prospect.
According to an embodiment of the present invention, the predetermined included angle is 0 to 90 degrees.
According to an embodiment of the invention, the predetermined angle is 0 degrees or 90 degrees.
According to an embodiment of the invention, the predetermined phase difference has a magnitude of 136nm to 154 nm.
According to an embodiment of the invention, the predetermined phase difference has a magnitude of 151nm or 143 nm.
According to an embodiment of the present invention, the touch display module satisfies at least one of the following conditions: when the preset included angle is 90 degrees, the preset phase difference is 143nm, the preset wavelength is 605 nm-700 nm, and only red light can be reflected out of the touch display module; when the preset included angle is 0 degree, the preset phase difference is 151nm, the preset wavelength is 500 nm-560 nm, and only green light can be reflected out of the touch display module; when the preset included angle is 0 degree, the preset phase difference is 151nm, the preset wavelength is 450 nm-480 nm, and only blue light can be reflected out of the touch display module.
According to an embodiment of the present invention, the substrate includes a cycloolefin polymer resin layer; the circular polarizer comprises a quarter-wave plate and a polyvinyl alcohol layer which are arranged in a stacked mode.
According to an embodiment of the present invention, a direction of the first phase difference is parallel to a short side of the touch display module, a direction of the second phase difference is parallel to a long side of the touch display module, the predetermined included angle is 90 degrees, a size of the predetermined phase difference is 143nm, and only red light can be reflected from the touch display module.
According to an embodiment of the present invention, a direction of the first phase difference is parallel to a short side of the touch display module, a direction of the second phase difference is parallel to the short side of the touch display module, the predetermined included angle is 0 degree, a magnitude of the predetermined phase difference is 151nm, and only green light can be reflected from the touch display module.
According to an embodiment of the present invention, a direction of the first phase difference is parallel to a long side of the touch display module, a direction of the second phase difference is parallel to the long side of the touch display module, the predetermined included angle is 0 degree, a magnitude of the predetermined phase difference is 151nm, and only blue light can be reflected from the touch display module.
In another aspect of the present invention, a display device is provided. According to an embodiment of the present invention, the display device includes the touch display module described above. Because the touch display module in the display device can be reflected by only the light with the preset color in the screen-off state, the display device can display the preset color in the screen-off state, has beautiful appearance, meets the aesthetic requirements of users, and has wide application range and good commercial prospect.
According to the embodiment of the invention, the color of the shell of the display device is the same as or complementary to the color of the touch display module in the screen-off state.
In another aspect of the present invention, a method for controlling a touch display module to display a predetermined color in a screen-off state is provided. According to an embodiment of the invention, the touch display module comprises a display module, a touch module and a circular polarizer which are sequentially stacked, the touch module comprises a substrate, and the method comprises the following steps: and a preset included angle is formed between the direction of a first phase difference generated by irradiating the substrate with ambient light and the direction of a second phase difference generated by irradiating the circular polarizer with the ambient light, and the sum of the first phase difference and the second phase difference is the preset phase difference, so that the light reflected by the touch display module after the ambient light is incident on the touch display module is light with a preset color. The method is simple and convenient to operate, easy to implement and easy to industrialize, and can effectively control the preset color displayed by the touch display module in the screen-off state.
Drawings
Fig. 1 shows a relationship curve between light beams with different wavelengths reflected by ambient light when the ambient light irradiates the touch display module and a phase difference generated when white light enters the touch display module.
Fig. 2 shows a poincare sphere corresponding to a relationship curve between the light beams with different wavelengths reflected by the touch display module when the ambient light shown in fig. 1 irradiates the touch display module and the magnitude of the phase difference generated when the white light enters the touch display module.
Fig. 3 shows a relationship curve between light beams with different wavelengths reflected by the touch display module according to an embodiment of the invention when the ambient light irradiates the touch display module and a phase difference generated when the white light enters the touch display module.
Fig. 4 shows a poincare sphere corresponding to a relationship curve between the light beams with different wavelengths reflected by the touch display module when the ambient light shown in fig. 3 irradiates the touch display module and the magnitude of the phase difference generated when the white light enters the touch display module.
Fig. 5 is a schematic cross-sectional view illustrating a touch display module according to an embodiment of the invention.
Fig. 6 is a schematic cross-sectional view illustrating a touch display module according to another embodiment of the invention.
Fig. 7 shows a schematic diagram of a predetermined angle between the direction of the first phase difference and the direction of the second phase difference according to an embodiment of the present invention.
Fig. 8 is a schematic diagram illustrating a direction of a first phase difference and a direction of a second phase difference in a touch display module according to an embodiment of the invention.
Fig. 9 is a schematic diagram illustrating a direction of a first phase difference and a direction of a second phase difference in a touch display module according to another embodiment of the invention.
Fig. 10 is a schematic diagram illustrating a direction of a first phase difference and a direction of a second phase difference in a touch display module according to another embodiment of the invention.
Fig. 11 is a schematic cross-sectional view illustrating a touch display module according to another embodiment of the invention.
Reference numerals:
1: first phase difference 2: second phase difference 10: touch-control display module assembly 11: red light 22: green light 33: 100 parts of blue light: the touch module 110: substrate 200: the display module 210: anode 220: hole injection layer 230: hole transport layer 240: electron emission layer 250: electron transport layer 260: cathode 300: the circular polarizer 400: the cover plate 500: the heat dissipation film 600: first flexible circuit board 700: second flexible circuit board
Detailed Description
The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.
In the related art, the display device displays black of the screen itself in the screen-off state, and has a single color tone and a poor visual effect, which cannot meet the user requirements. Therefore, the inventors of the present invention propose a touch display module capable of displaying a predetermined color in a screen-off state, so that the display device has an attractive appearance and meets the aesthetic requirements of users. Thus, after a great deal of research on the effect of the display device on the ambient light in the off-screen state, the inventor found that, as shown in fig. 1, a relationship curve between light rays with different wavelengths reflected by the touch display module and the magnitude of the phase difference generated when the white light enters the touch display module, in an ideal state, when the ambient light (in the related art, the ambient light is usually white light) is irradiated into the touch display module, the magnitude of the phase difference generated by the ambient light entering the touch display module and the wavelength of the light capable of being emitted from the display module have a certain corresponding relationship, that is: after the white light is irradiated into the touch display module, the white light cannot be reflected from the touch display module due to the function of the circular polarizer (i.e., all the wavelengths of the light are circularly polarized, as shown by the dotted line in fig. 1). In practice, however, not all wavelengths of light are circularly polarized, in which case, long and short wavelengths of light, after the white light is irradiated into the touch display module, the white light can be reflected from the touch display module (i.e., part of the light is elliptically polarized light, as shown by the solid line in fig. 1, it should be noted that, in the poincare sphere shown in fig. 2, the light at the south pole and the north pole is circularly polarized light, the light at any point except the north pole and the south pole is elliptically polarized light, and the light at the equator is linearly polarized light). As can be seen from fig. 1, the wavelength corresponding to the intersection point is a predetermined wavelength between the red light and the green light, that is, in the case shown in fig. 1, after the ambient light is irradiated into the touch display module, the light with the predetermined wavelength is a complete circularly polarized light, which is absorbed by the touch display module, and referring to fig. 2, the blue light 33 is elliptically polarized light, so that the blue light 33 is reflected from the touch display module at this time.
After adjusting the phase difference direction of the ambient light irradiated to the circular polarizer in the touch display module and the substrate of the touch module, when the ambient light is irradiated to the touch display module, the magnitude of the phase difference generated by the light incident into the touch display module and the wavelength of the light capable of being emitted from the touch display module still have a certain corresponding relationship, such as a relationship curve between the wavelength of the reflected light after the white light is incident into the touch display module and the magnitude of the phase difference generated when the white light is incident into the touch display module, as shown in fig. 3. Since the inventor adjusts the magnitude of the phase difference generated after the ambient light (in the related art, the ambient light is usually white light) is incident on the touch display module, for example, the magnitude of the phase difference generated after the ambient light is incident on the touch display module is reduced, the solid line b shown in fig. 3 is shifted down in fig. 3 compared to the solid line a before the magnitude of the phase difference generated by the unadjusted ambient light is incident on the display module. Thus, the intersection of the solid line b and the broken line in fig. 3 (i.e., the magnitude-wavelength correspondence relationship of the phase difference in the ideal state) is shifted to a lower wavelength than the solid line a. Thus, in this case, referring to fig. 4, it is changed that the blue light 33 is circularly polarized, and when the touch display module is in the off-screen state, after the ambient light is incident into the touch display module, the blue light 33 is absorbed by the touch display module, so that only the red light 11 is reflected from the touch display module.
Based on the above research, in one aspect of the present invention, a touch display module is provided. According to an embodiment of the present invention, referring to fig. 5 and 7, the touch display module 10 includes a display module 200, a touch module 100 and a circular polarizer 300, which are sequentially stacked, where the touch module 100 includes a substrate (not shown), a predetermined included angle θ is formed between a direction of a first phase difference 1 generated by the ambient light irradiated onto the substrate and a direction of a second phase difference 2 generated by the ambient light irradiated onto the circular polarizer, and the predetermined included angle θ makes a sum of the first phase difference 1 and the second phase difference 2 a predetermined phase difference, and in a screen-off state of the touch display module 10, when the ambient light is incident into the touch display module 10, the predetermined phase difference enables only light with a predetermined color to be reflected from the touch display module 10. Because only light with a predetermined color can be reflected out of the touch display module 10 in the screen-off state, the touch display module 10 can display the predetermined color in the screen-off state, has an attractive appearance, meets aesthetic requirements of users, and has a wide application range and good commercial prospects.
According to an embodiment of the present invention, referring to fig. 6, a display module of the touch display module includes an anode 210; a hole injection layer 220, wherein the hole injection layer 220 is disposed on a surface of the anode 210 close to the touch module 100; a hole transport layer 230, wherein the hole transport layer 230 is disposed on the surface of the hole injection layer 220 close to the touch module 100; an electron emission layer 240, wherein the electron emission layer 240 is disposed on a surface of the hole transport layer 230 close to the touch module 100, and the electron emission layer 240 includes an organic light emitting material and is configured to emit light; an electron transport layer 250, wherein the electron transport layer 250 is disposed on the surface of the electron emission layer 240 close to the touch control film assembly 100; and the cathode 260 is arranged on the surface of the electron transport layer 250 close to the touch module 100. When the touch display module 10 is in the off-screen state, when the ambient light irradiates the touch display module 10, the ambient light will be reflected from the surface of the anode 210, and after passing through the circular polarizer 300 and the substrate of the touch module 100, only the light with the predetermined wavelength (i.e. only the light with the predetermined color) will be emitted from the touch display module 10 because the circular polarizer 300 and the substrate of the touch module 100 have the predetermined phase difference, so that the touch display module 10 displays the predetermined color in the off-screen state.
According to an embodiment of the present invention, referring to fig. 7, specifically, the predetermined angle θ between the first phase difference 1 and the second phase difference 2 is 0 to 90 degrees. Therefore, the touch display module 10 can display various colors in the off-screen state, for example, the colors may include red, orange, yellow, green, cyan, blue, or purple, and the colors that the touch display module 10 can realize in the off-screen state are various, so that the appearance effect of the touch display module 10 can be better improved.
In some embodiments of the present invention, the predetermined included angle may be 0 degree or 90 degrees. Therefore, the touch display module 10 can display three primary colors (namely red, green and blue) in the screen-off state, and has the advantages of simple process, low cost, convenient operation, easy realization and easy industrialization.
According to an embodiment of the present invention, the predetermined phase difference may have a magnitude of 136nm to 154 nm. Specifically, 136nm, 137nm, 138nm, 139nm, 140nm, 141nm, 142nm, 143nm, 144nm, 145nm, 146nm, 147nm, 148nm, 149nm, 150nm, 151nm, 152nm, 153nm, 154nm, or the like may be included. Therefore, when the ambient light enters the touch display module, only the light with the predetermined color can be reflected from the touch display module, and the color is purer than that when the predetermined phase difference is not limited, so that the touch display module 10 can further display the predetermined color; meanwhile, the phase difference generated by irradiating the circular polarizer and the base material with ambient light is the property of the circular polarizer and the base material of the touch module, and the combination of the circular polarizer and the base material can bring the predetermined phase difference within the range, so that the property of the forming material of the circular polarizer and the base material of the touch module is skillfully utilized, the manufacturing is easy, and the cost is low.
In some embodiments of the invention, the predetermined phase difference is 151nm or 143 nm. Therefore, the touch display module 10 can display three primary colors (namely red, green and blue) in the screen-off state, and has the advantages of simple process, low cost, convenient operation, easy realization and easy industrialization.
According to an embodiment of the present invention, further, the magnitude of the first phase difference may be 2nm to 6 nm. Specifically, it may be 2nm, 3nm, 4nm, 5nm, or 6nm or the like. Therefore, the substrate material of the touch module with the first phase difference is wide in source, easy to obtain and low in cost; meanwhile, the phase difference sensor is easy to manufacture, simple in process and capable of being well combined with a circular polarizer in a touch display module to obtain the preset phase difference.
According to an embodiment of the present invention, further, the magnitude of the second phase difference may be 140nm to 150 nm. Specifically, 140nm, 141nm, 142nm, 143nm, 144nm, 145nm, 146nm, 147nm, 148nm, 149nm, 150nm, or the like may be included. Therefore, the material of the circular polarizer with the second phase difference is wide in source, easy to obtain and low in cost; meanwhile, the phase difference sensor is easy to manufacture, simple in process and capable of being well combined with a substrate in a touch control film group to obtain the preset phase difference.
In some embodiments of the present invention, the substrate may include a cycloolefin polymer resin layer (COP); the circular polarizer may include a quarter wave plate and a polyvinyl alcohol layer (PVA) that are disposed in a stack. Therefore, the material source is wide and easy to obtain, the cost is low, and the touch display module can be effectively enabled to have the preset phase difference.
According to an embodiment of the present invention, a specific manner of controlling the direction of the first phase difference generated by the irradiation of the aforementioned ambient light to the substrate and the direction of the second phase difference generated by the irradiation of the ambient light to the circular polarizer is not particularly limited. For example, in some embodiments of the present invention, this may be achieved by changing the stretching direction or the shrinking direction of the substrate and the circular polarizer while the substrate and the circular polarizer are molded. In the forming process, the stretching direction or the shrinking direction of the substrate and the circular polarizer is the phase difference direction generated after the substrate or the circular polarizer is irradiated by ambient light. Therefore, the substrate and the circular polarizer with different phase difference directions can be well manufactured.
According to an embodiment of the present invention, specifically, in the touch display module, when the predetermined included angle is 90 degrees, the predetermined phase difference is 143nm, the predetermined wavelength is 605nm to 700nm, and only red light can be reflected from the touch display module (fig. 8 is a schematic diagram of a direction of the first phase difference 1 and a direction of the second phase difference 2); when the predetermined included angle is 0 degree, the predetermined phase difference is 151nm, the predetermined wavelength is 500nm to 560nm, and only green light can be reflected from the touch display module (a schematic diagram of the direction of the first phase difference 1 and the direction of the second phase difference 2 can refer to fig. 9); when the predetermined included angle is 0 degree, the predetermined phase difference is 151nm, the predetermined wavelength is 450nm to 480nm, and only blue light can be reflected from the touch display module (see fig. 10 for a schematic diagram of the direction of the first phase difference 1 and the direction of the second phase difference 2). Therefore, in the screen-off state of the touch display module, after the ambient light enters the touch display module, the predetermined phase difference enables only the light with the predetermined color to be reflected from the touch display module 10. The touch display module 10 can display a preset color in a screen extinguishing state, is attractive in appearance, meets aesthetic requirements of users, and has a wide application range and good commercial prospect.
In a specific embodiment of the invention, referring to fig. 8, the direction of the first phase difference 1 is parallel to a short side of the touch display module, the direction of the second phase difference 2 is parallel to a long side of the touch display module, the predetermined included angle is 90 degrees, the predetermined phase difference is 143nm, the predetermined wavelength is 605nm to 700nm, and only red light can be reflected from the touch display module. In this embodiment, since the direction of the first phase difference 1 generated by the ambient light irradiated to the substrate 110 and the direction of the second phase difference 2 generated by the ambient light irradiated to the circular polarizer 300 are perpendicular to each other, and the directions of the first phase difference 1 and the second phase difference 2 are different, after the summation, the magnitude of the predetermined phase difference generated by the ambient light irradiated to the entire touch display module is reduced, and the solid line b shown in fig. 3 is shifted down as a whole in fig. 3 compared to the solid line a before the magnitude of the phase difference generated by the unadjusted ambient light irradiated to the display module. Thus, the intersection of the solid line b and the broken line in fig. 3 (i.e., the magnitude-wavelength correspondence relationship of the phase difference in the ideal state) is shifted to a lower wavelength than the solid line a. Thus, in this case, referring to fig. 4, it is changed that the blue light 33 is circularly polarized, and when the touch display module is in the off-screen state, after the ambient light is incident into the touch display module, the blue light 33 is absorbed by the touch display module, so that only the red light 11 is reflected from the touch display module.
In another specific embodiment of the present invention, referring to fig. 9, a direction of the first phase difference 1 is parallel to a short side of the touch display module, a direction of the second phase difference 2 is parallel to the short side of the touch display module, the predetermined included angle is 0 degree, a magnitude of the predetermined phase difference is 151nm, the predetermined wavelength is 500nm to 560nm, and only green light can be reflected from the touch display module. In this embodiment, since the direction of the first phase difference 1 generated by the ambient light irradiated to the substrate 110 and the direction of the second phase difference 2 generated by the ambient light irradiated to the circular polarizer 300 are parallel to each other, and the directions of the first phase difference 1 and the second phase difference 2 are the same, after the summation, the magnitude of the predetermined phase difference generated by the ambient light irradiated to the entire touch display module is increased, and the solid line shown in fig. 1 is shifted upward as a whole compared with the solid line before the magnitude of the phase difference generated by the unadjusted ambient light incident to the display module. As a result, the intersection of the solid line after the upward shift and the broken line in fig. 1 (i.e., the magnitude-wavelength correspondence relationship of the phase difference in the ideal state) shifts to a higher wavelength. Therefore, under the condition, the circularly polarized light is red light, and when the touch display module is in a screen extinguishing state, after the ambient light is irradiated into the touch display module, the red light is absorbed by the touch display module; in addition, since the user usually observes the touch display module along the angle shown in fig. 9 when using the touch display module, when the directions of the first phase difference 1 and the second phase difference 2 are both parallel to the short side of the touch display module, the color of the touch display module 10 observed by the user is green.
In another specific embodiment of the present invention, referring to fig. 10, a direction of the first phase difference 1 is parallel to a long side of the touch display module, a direction of the second phase difference 2 is parallel to the long side of the touch display module, the predetermined included angle is 0 degree, a magnitude of the predetermined phase difference is 151nm, the predetermined wavelength is 450nm to 480nm, and only blue light can be reflected from the touch display module. In this embodiment, since the direction of the first phase difference 1 generated by the ambient light irradiated to the substrate 110 and the direction of the second phase difference 2 generated by the ambient light irradiated to the circular polarizer 300 are parallel to each other, and the directions of the first phase difference 1 and the second phase difference 2 are the same, after the summation, the magnitude of the predetermined phase difference generated by the ambient light irradiated to the entire touch display module is increased, and the solid line shown in fig. 1 is shifted upward as a whole compared with the solid line before the magnitude of the phase difference generated by the unadjusted ambient light incident to the display module. As a result, the intersection of the solid line after the upward shift and the broken line in fig. 1 (i.e., the magnitude-wavelength correspondence relationship of the phase difference in the ideal state) shifts to a higher wavelength. Therefore, under the condition, the circularly polarized light is red light, and when the touch display module is in a screen extinguishing state, after the ambient light is irradiated into the touch display module, the red light is absorbed by the touch display module; in addition, since the user usually observes the touch display module along the angle shown in fig. 10 when using the touch display module, as mentioned above, when the directions of the first phase difference 1 and the second phase difference 2 are both parallel to the long side of the touch display module, the color of the touch display module 10 observed by the user is blue (it should be noted that, when the directions of the first phase difference 1 and the second phase difference 2 are both parallel to the short side or the long side of the touch display module, the reason why the color of the touch display module 10 observed by the user is different is that, according to the optical principle, the phase difference of the quarter-wave plate in the circular polarizer is λ/4 under the front viewing angle, and the observed color is black under the front viewing angle (i.e. when observing perpendicular to the touch display module), the phase difference of the quarter-wave plate is less than lambda/4 as the viewing angle is reduced and the value of the phase difference is reduced as the viewing angle is changed, and the phase difference is basically unchanged as the viewing angle is changed when the inclination angle reaches 45 degrees, so that the observed color is different when the quarter-wave plate is rotated in different directions).
According to an embodiment of the present invention, in addition to the foregoing structure, referring to fig. 11, the touch display module 10 may further include, for example, a cover plate 400, where the cover plate 400 is disposed on a surface of the circular polarizer 300 away from the touch module 100; the heat dissipation film 500 is arranged on the surface of the display module 200 far away from the touch module 100; the first flexible circuit board 600, the first flexible circuit board 600 is arranged on the surface of the heat dissipation film 500 far away from the display module 200; a second flexible circuit board 700, wherein the second flexible circuit board 700 is arranged on the surface of the first flexible circuit board 600 far away from the heat dissipation film 500. In addition, the touch display module 10 may further include other structures and components of a conventional touch display module, which are not described herein in detail.
In another aspect of the present invention, a display device is provided. According to an embodiment of the present invention, the display device includes the touch display module described above. Because the touch display module in the display device can be reflected by only the light with the preset color in the screen-off state, the display device can display the preset color in the screen-off state, has beautiful appearance, meets the aesthetic requirements of users, and has wide application range and good commercial prospect.
According to the embodiment of the invention, the color of the housing of the display device can be arbitrarily matched with the color of the touch display module in the screen-off state, wherein when the color of the housing of the display device can be the same as or complementary to the color of the touch display module in the screen-off state, the display device has a better visual effect in the screen-off state.
According to the embodiment of the present invention, the display device further includes other necessary structures and components besides the display back plate described above, and those skilled in the art can supplement and design the display device according to the specific kind and use requirements of the display device, and therefore, redundant description is not repeated herein.
According to an embodiment of the present invention, the specific kind of the display device is not particularly limited, for example, including but not limited to a mobile phone, a tablet computer, a television, a vehicle-mounted display, a wearable device, a game machine, and the like. Therefore, the application range is wide.
In another aspect of the present invention, a method for controlling a touch display module to display a predetermined color in a screen-off state is provided. According to an embodiment of the present invention, referring to fig. 5, the touch display module 10 includes a display module 200, a touch module 100 and a circular polarizer 300, which are sequentially stacked, the touch module 100 includes a substrate (not shown), and referring to fig. 7, the method includes: a preset included angle theta is formed between the direction of a first phase difference 1 generated by irradiating ambient light to the base material and the direction of a second phase difference 2 generated by irradiating the ambient light to the circular polarizer, and the sum of the first phase difference 1 and the second phase difference 2 is the preset phase difference due to the preset included angle theta, so that light reflected after the ambient light enters the touch display module is light with a preset color.
According to the embodiments of the present invention, in particular, the direction of adjusting the phase difference generated when ambient light passes through the substrate and the circular polarizer may be achieved by changing the stretching direction or the shrinking direction of the substrate and the circular polarizer when the substrate and the circular polarizer are molded. In the forming process, the stretching direction or the shrinking direction of the substrate and the circular polarizer is the phase difference direction generated after the substrate or the circular polarizer is irradiated by ambient light.
According to the embodiment of the invention, when the ambient light is incident into the touch display module, the predetermined phase difference enables only the light with the predetermined color to be reflected from the touch display module. The touch display module can display a preset color in a screen extinguishing state, is attractive in appearance, meets aesthetic requirements of users, and has a wide application range and good commercial prospect.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (13)
1. A touch display module comprises a display module, a touch module and a circular polarizer which are sequentially stacked, and is characterized in that the touch module comprises a substrate, a preset included angle is formed between the direction of a first phase difference generated by irradiating ambient light to the substrate and the direction of a second phase difference generated by irradiating the ambient light to the circular polarizer, the sum of the first phase difference and the second phase difference is the preset phase difference, and in the screen-off state of the touch display module, after the ambient light is irradiated to the touch display module, the preset phase difference enables only light with preset color to be reflected from the touch display module.
2. The touch display module of claim 1, wherein the predetermined angle is 0 to 90 degrees.
3. The touch display module of claim 2, wherein the predetermined angle is 0 degree or 90 degrees.
4. The touch display module according to any one of claims 1 to 3, wherein the predetermined phase difference is 136nm to 154 nm.
5. The touch display module of claim 4, wherein the predetermined phase difference is 151nm or 143 nm.
6. The touch display module of claim 1, wherein at least one of the following conditions is satisfied:
when the preset included angle is 90 degrees, the preset phase difference is 143nm, the preset wavelength is 605 nm-700 nm, and only red light can be reflected out of the touch display module;
when the preset included angle is 0 degree, the preset phase difference is 151nm, the preset wavelength is 500 nm-560 nm, and only green light can be reflected out of the touch display module;
when the preset included angle is 0 degree, the preset phase difference is 151nm, the preset wavelength is 450 nm-480 nm, and only blue light can be reflected out of the touch display module.
7. The touch display module of claim 1, wherein the substrate comprises a cyclo olefin polymer resin layer; the circular polarizer comprises a quarter-wave plate and a polyvinyl alcohol layer which are arranged in a stacked mode.
8. The touch display module of claim 7, wherein the first phase difference is parallel to a short side of the touch display module, the second phase difference is parallel to a long side of the touch display module, the predetermined angle is 90 degrees, the predetermined phase difference is 143nm, and only red light can be reflected from the touch display module.
9. The touch display module of claim 7, wherein the first phase difference is parallel to the short side of the touch display module, the second phase difference is parallel to the short side of the touch display module, the predetermined angle is 0 degree, the predetermined phase difference is 151nm, and only green light can be reflected from the touch display module.
10. The touch display module of claim 7, wherein the first phase difference is parallel to a long side of the touch display module, the second phase difference is parallel to the long side of the touch display module, the predetermined angle is 0 degree, the predetermined phase difference is 151nm, and only blue light can be reflected from the touch display module.
11. A display device comprising the touch display module according to any one of claims 1 to 10.
12. The display device according to claim 11, wherein a color of a housing of the display device is the same as or complementary to a color of the touch display module in a screen-off state.
13. The utility model provides a method for controlling touch-control display module assembly to show predetermined colour under putting out the screen state, touch-control display module assembly includes display module assembly, touch-control module assembly and the circular polaroid that stacks gradually the setting, touch-control module assembly includes the substrate, its characterized in that, the method includes:
and a preset included angle is formed between the direction of a first phase difference generated by irradiating the substrate with ambient light and the direction of a second phase difference generated by irradiating the circular polarizer with the ambient light, and the sum of the first phase difference and the second phase difference is the preset phase difference, so that the light reflected by the touch display module after the ambient light is incident on the touch display module is light with a preset color.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010263920.8A CN111443828B (en) | 2020-04-07 | 2020-04-07 | Touch display module, control method thereof and display device |
| US17/203,715 US11474628B2 (en) | 2020-04-07 | 2021-03-16 | Touch display module, control method thereof and display device |
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| CN202010263920.8A CN111443828B (en) | 2020-04-07 | 2020-04-07 | Touch display module, control method thereof and display device |
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| US20050110926A1 (en) * | 1997-04-23 | 2005-05-26 | Sharp Kabushiki Kaisha | Reflective liquid crystal display device and reflective liquid crystal display device incorporating touch panel arranged therefrom |
| US20100188341A1 (en) * | 2009-01-23 | 2010-07-29 | Mitac Technology Corp. | Display device and touch module thereof |
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| CN207067963U (en) * | 2017-08-31 | 2018-03-02 | 合肥鑫晟光电科技有限公司 | A kind of touch base plate and display device |
| CN110188672A (en) * | 2019-05-29 | 2019-08-30 | 京东方科技集团股份有限公司 | A kind of touch-control display module, electronic equipment |
| EP3567632A1 (en) * | 2017-01-24 | 2019-11-13 | Huawei Technologies Co., Ltd. | Display panel and manufacturing method thereof, and display device display |
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| US20050110926A1 (en) * | 1997-04-23 | 2005-05-26 | Sharp Kabushiki Kaisha | Reflective liquid crystal display device and reflective liquid crystal display device incorporating touch panel arranged therefrom |
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| CN103097927A (en) * | 2010-03-17 | 2013-05-08 | Lg化学株式会社 | Circular polarising plate and a reflective liquid-crystal display device comprising the same |
| EP3567632A1 (en) * | 2017-01-24 | 2019-11-13 | Huawei Technologies Co., Ltd. | Display panel and manufacturing method thereof, and display device display |
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|---|---|
| US11474628B2 (en) | 2022-10-18 |
| CN111443828B (en) | 2024-04-09 |
| US20210311574A1 (en) | 2021-10-07 |
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